When many Americans research their family tree they often get to a point where they almost certainly came from England (and may even have details of the ship that brought them). Frequently there is no clear indication as to where in England they may have come from. Mara has such a problem with her 18th century Elborn ancestors but, as I demonstrated in an earlier query ELBORN, Hertfordshire area, 19th Century, the name is very much linked to the counties of Buckinghamshire. Cambridgeshire and Hertfordshire. In my reply I gave her some general advice (which you may find useful if you have a similar problem) and referred her to the advice page My Ancestors Emigrated from Hertfordshire. I also gave some specific advice on the Hertfordshire Militia Lists for tracing men in the second half of the 18th century.